had laser code
ordered LK700..recv LK710
was told LK710 replaces LK700???
machine works with no code, but image off
LSU is set to 5035 according to manual

is LK710 the replacement for LK700??

you need a new laser assy

LK710 has replaced LK700. Load latest firmware and change U-274 to 3

from SB-8183:

Field Measure: If use LK-710(New No.1) in the machine before upgrading the firmware, upgrade the
firmware to the latest and change the value to "3"(LK-710) with ADJUST DATA in
maintenance mode U274. (The default value is "2"(LK-700).)
*If use LK-710 without changing the value, the image will be shrink about 15 % in
the main scanning direction.